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Partners' Capital and Distributions - Contributions from Noncontrolling Interests (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2022
Partners' Capital and Distributions [Line Items]
Contributions received	$ 26	$ 1	$ 12
Noncontrolling Interests
Partners' Capital and Distributions [Line Items]
Contributions received	26	$ 1	12
Noncontrolling Interests | Plains Oryx Permian Basin LLC
Partners' Capital and Distributions [Line Items]
Contributions received	$ 26
Noncontrolling Interests | Red River
Partners' Capital and Distributions [Line Items]
Contributions received			$ 12
Advantage Pipeline Holdings LLC
Partners' Capital and Distributions [Line Items]
Additional interest acquired				50.00%
Advantage Pipeline Holdings LLC | Noncontrolling Interests | Plains Oryx Permian Basin LLC
Partners' Capital and Distributions [Line Items]
Additional interest acquired				50.00%

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- Definition

Partners' Capital and Distributions [Line Items]

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
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Total contributions made by each class of partners (i.e., general, limited and preferred partners).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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